Examples

In this example, we first define a base class and an extension
of the class. The base class describes a general vegetable,
whether it is edible or not and what is its color. The subclass
Spinach adds a method to cook it and another to
find out if it is cooked.

We then instantiate 2 objects from these classes and print out
information about them, including their class parentage.
We also define some utility functions, mainly to have a nice printout
of the variables.

One important thing to note in the example above is that
the object $leafy is an instance of the class
Spinach which is a subclass of
Vegetable,
therefore the last part of the script above will output:

[...]
Parentage:
Object leafy does not belong to a subclass of Spinach
Object leafy belongs to class spinach, a subclass of Vegetable